Sash-fastener



C. W. NICHOLS.

SASH FASTENER.

APPLIcATloN FILED DEC. 4, 1920.

1,398,036; A Pawnmrmzz, 1921.

PATENT OFFICE.

CHARLES W. NICHOLS, OF ST. LOUIS, MISSOURI.

SASH-FASTENER.

Specification of Letters Patent.

Patented Nov. 22, 1921.

Application led December 4, 1920. Serial No. 428,302.

To all whom t may concern Be it known that I, CHARLES IV. N ici-1ers, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Sash-Fasteners, of which the following is a specification.

rIlhis invention is a sash fastener that will prevent thieves from forcing a window open by what is known as jimmying.

In the accompanying drawings forming part of this specification, in which like numbers of reference denote like parts wherever they occur,

Figure 1 is an inside view of a pair of window-sash with this fastener in place;

Fig. 2 is a sectional view on the line 2 2 in Fig. l;

Fig. 3 shows, in side elevation, the details of this device; and

Fig. 4 is a view similar to Fig. 2, but showing the upper sash as slightly lowered.

Through the top cross-member 1 of the lower sash 2 a hole 3 is pierced, its complement -being socket t in bottom cross-member 5 of upper sash 6.

In the socket 4 fits a plug T with points S that enter the wood of member 5. hole in plug 7 is screwthreaded at 9.

Bolt 10 is screwthreade'd at 1l, which threads are adapted to cooperate with threads 9.

A handle or thumbnut 12 is fastened by cotterpin 13 to bolt 10, so as to turn threads 11 in either direction, either to engage w'.h threads 9 or to disengage therefrom.

Plug 7 is held in socket -1 by keeper plate 14. Bolt 10 and nut 12 are fastened to member 1 by plate 15 and screws 16.

Springs 17 keeps bolt 10 normally retracted out of the threaded hole in plug 7, but the coperation of threads 9 and 11 overcomes spring 17.

IVhen bolt 10 is in the posit-ion shown in Fig. 2, the sashes 2 and 6 are effectually fastened against movement relative to each other and are fastened in the position shown in Fig. 1.

lVhile the drawings show but one of these sash-locks in place on the window in Fig. 1, a plurality of the same may be used if desired, in which event they are likely to be located rather toward the sides of the window than both at the middle.

Hole 3 is preferably formed with a shoulder 18, one part of hole 3 being of larger cross-sectional area than the other part. v

This fastener can be adapted to lock one sash, if the same is provided with a place in which to slide relative to the frame, in which event hole 3 will be located in the frame or other stationary member instead of sash 2.

Having thus described this invention, I hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein without departing from the spirit of this invention or the scope of the following claim.

I claim:

In a sash lock including a screwthreaded locking member normally held in a passive position by spring action, an internallyscrewthreaded member for receiving the bolt to complete a positive lock, said internallyscrewedthreaded member adapted for disposition in an opening provided in a sash whereby to conceal the same, and a plurality of prongs integrally formed on said member whereby to positively attach said member to a sash irrespective of the size or conguration of the recess for receiving theV same.

In testimony whereof I hereunto atlix my signature.

CHARLES IV. NICHOLS. 

